HATS-14 b
Astrophysical Synthesis & Habitability Characterization
HATS-14 b is a confirmed gas giant exoplanet orbiting the star HATS-14, located approximately 1673.2 light-years (513.01 parsecs) from the Solar System. First announced in 2015 by HATSouth using the Transit detection technique (producing an estimated primary transit depth of 1.3096% across the stellar disk), this world measures 11.646 Earth radii (1.04 Jupiter radii) and has a measured mass of 340.396 Earth masses (1.07 Jupiter masses). Combining its mass and radius yields a mean bulk density of 1.19 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 2.51 g⊕ (24.61 m/s²), and an escape velocity of 60.5 km/s.
In its orbital architecture around HATS-14, HATS-14 b completes one full revolution every 2.767 Earth days at a semi-major axis of 0.03815 AU (an ultra-close orbit less than one-seventh of Mercury's 0.387 AU distance from the Sun, where strong stellar tidal forces typically induce synchronous rotation). Its mean orbital velocity is approximately 150 km/s (compared to Earth's 29.8 km/s). Its moderate orbital eccentricity of e = 0.142 carries the world between 0.0327 AU at periapsis and 0.0436 AU at apoapsis, driving measurable seasonal insolation cycles.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1276 K (+1003°C / +1837°F) and receiving 505.88 S⊕ (~688,508 W/m²), HATS-14 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star HATS-14 is classified as a stellar host with an effective photospheric temperature of 5,346 K, a radius of 0.933 R☉, a mass of 0.967 M☉, an estimated bolometric luminosity of 0.638 L☉. Stellar evolution modeling indicates an estimated stellar age of 4.9 Gyr and a metallicity of [Fe/H] = 0.33 dex (metal-rich relative to the Sun). From Earth, HATS-14 shines at apparent V-band magnitude 14.052 (faint and requiring research-grade or CCD telescopic photometry) in the Southern celestial hemisphere.
Methodology: Computed using the Schulze-Makuch et al. (2011) weighted metric comparing physical interior (radius, estimated density) and surface thermal regime (escape velocity, equilibrium temperature).
Discovery Facility: HATSouth · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | HATS-14 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,346 K |
| Stellar Radius | 0.9330 R☉ |
| Stellar Mass | 0.9670 M☉ |
| Bolometric Luminosity | 0.638 L☉ |
| Metallicity [Fe/H] | 0.330 dex |
| Stellar Age | 4.900 Gyr |
| Apparent Magnitude | V: 14.052 · G: 13.771 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.038150 AU |
| Orbital Period | 2.767 days |
| Mean Orbital Velocity | 150 km/s |
| Orbital Eccentricity (e) | 0.14200 |
| Orbital Inclination (i) | 88.8300° |
| Mean Bulk Density | 1.19 g/cm³ (60.5 km/s vesc) |
| Insolation Flux | 505.8840 S⊕ (~688,508 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1673.200 LY (513.011 pc) |